Gorilla Conservation Vol 11 2009 - WAZA

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Gorilla Conservation Vol 11 2009 - WAZA
Vol
                                                                                                                          11 2009

                                                                                                   Gorilla Conservation

Mountain gorilla (Gorilla beringei) at Bwindi Impenetrable Forest, Uganda. | © Gerald Dick, WAZA
Gorilla Conservation Vol 11 2009 - WAZA
WAZA magazine Vol 11/2009

                                        Contents
                                           Introduction | Gerald Dick .......... 1          Djeke Gorilla Project
                                                                                            in Nouabalé‑Ndoki National
                                           Protecting Africa’s rarest gorilla:              Park, Republic of Congo,
                                           conservation of the cross river                  Creating an educational trail
                                           gorilla in Cameroon and Nigeria |                for eco‑tourists |
                                           Andrew Dunn                                      Florence Perroux ...................... 22
                                           & Aaron Nicholas ........................3       Le projet Gorilla Djeke au Parc
                                           Protection du gorille le plus                    National Nouabalé‑Ndoki,
                                           rare de l’Afrique: Conservation                  République du Congo
                                           du gorille de Cross River                        Création d’un parcours
                                           au Cameroun et le Nigeria ............ 8         didactique pour les
                                                                                            éco‑touristes...............................25
                                           Addressing the trade
                                           in apes in Africa |                              Partners In Conservation (PIC):
                                           Neil Madisson ........................... 11     Poverty alleviation as key
Imprint                                    Traiter le commerce                              for Mountain gorilla conservation
                                           des grands singes en Afrique ....... 13          (Gorilla beringei) |
Editor: Gerald Dick,                                                                        Charlene Jendry ........................26
WAZA Executive Office                      A gorilla researcher’s                           Partenaires en conservation (PIC):
Lindenrain 3                               perspective on the Year                          Lutte contre la pauvreté en tant
CH 3012 Bern                               of the Gorilla 2009 |                            que clé pour la conservation
Switzerland                                Thomas Breuer ......................... 14       du Gorille de Montagne
phone: +41 31 300 20 30                    Une perspective d’un chercheur                   (Gorilla beringei) .................cover III
fax:      +41 31 300 20 31                 de gorille sur l’Année
                                           du Gorille 2009 ...........................20
Layout and typesetting: michal@sky.cz
Print: Agentura NP, Staré Město, CZ
French translations:
Nadine Renaudeau d’Arc

Edition: 1500 copies
© WAZA June 2009

This edition of WAZA Magazine
is also available on
www.waza.org (members’ area).

Printed on FSC paper.

                                        © Gerald Dick, WAZA
                                        Souvenir shops at Bwindi, Uganda in support of community based activities.

ISSN: 2074-4528
Gorilla Conservation Vol 11 2009 - WAZA
WAZA magazine Vol 11/2009                                                                                                                  1

  Gerald Dick, WAZA Executive Director

  Introduction                                                                                                                                 »

  The first new edition of the WAZA
  Magazine is dedicated to gorilla con‑
  servation, and there are many good
  reasons for that. The most important
  one is the urgent need to conserve
  viable wild populations of gorillas in
  order to prevent their extinction. All
  four gorilla subspecies remain clas‑
  sified as “endangered” or “critically                © Gerald Dick, WAZA
                                                       Self-portrait with one of critically engangered “gentle giant”, Uganda, May 2009.
  endangered” on the IUCN Red List of
  threatened species.

  In order to support and guide gorilla       mentation of the new CMS agree‑                 initiative, 108 zoos are actively sup‑
  conservation, WAZA has joined hands         ment on the conservation of gorillas            porting gorilla conservation through
  with CMS (Convention of Migratory           and their habitats which came active            various means. Information material
  Species of Wild Animals of UNEP) and        in June 2008. As educating the wider            is used to inform and educate visitors,
  GRASP (Great Ape Survival Partner‑          public and raising awareness in order           an education manual is provided
  ship of UNEP/UNESCO) to declare             to get more support for projects is             on the WAZA and IZE websites for
  2009 the Year of the Gorilla. A major       key, the world zoo community can                zoo educators and teachers, special
  objective of the initiative is the imple‑   play a crucial role. In support of this         events like gorilla days are organ‑
                                                                                              ised, special fundraising events also
                                                                                              help to support in situ projects. In
                                                                                              this edition of the WAZA Magazine,
                                                                                              gorilla projects of the WAZA branded
                                                                                              project list are introduced. They are
                                                                                              dealing with the Cross River Gorilla,
                                                                                              Western Lowland Gorilla and Moun‑
                                                                                              tain Gorilla, addressing threats like
                                                                                              logging and bush meat trade but also
                                                                                              offering some solutions, based on re‑
                                                                                              search. These examples illustrate the
                                                                                              important role of the zoo community
                                                                                              in conservation, as also laid out in the
                                                                                              World Zoo and Aquarium Conserva‑
                                                                                              tion Strategy.

                                                                                              Cross River Gorilla
                                                                                              Western Lowland Gorilla
                                                                                              Eastern Lowland Gorilla
                                                                                              Mountain Gorilla
Gorilla Conservation Vol 11 2009 - WAZA
2      Introduction                                                                                                       WAZA magazine Vol 11/2009

»
I have had the pleasure to attend                      Apart from these interesting and
the 2009 Annual General Meeting                        encouraging figures, there is also
of PAAZAB, the African Associa‑                        emotional convincing support for
tion of Zoos and Aquaria in Entebbe,                   such activities: these species are
Uganda and explore the potential of                    humankind’s closest relatives and
ecotourism as an economic incentive                    an encounter with habituated gorilla
and mechanism for support of local                     groups in the wild is something so
communities and conservation. In                       touching that you will never forget.
Uganda the revenue from the official                   As I was privileged to see wild goril‑
gorilla permits alone was 1,2 million                  las at Bwindi Impenetrable Forest
US Dollars in 2008 and 20% of that                     I can confirm and share these strong
money generally goes directly to the                   feelings and sincerely hope that
communities concerned. In addition                     the implementation of the gorilla

                                                                                                                                    2009
there is money spent by the gorilla                    agreement and the ongoing support
tourists for the tour operators as well                of zoos will help to save all gorilla
as on souvenirs, trekking support, ac‑                 subspecies.
commodation and other related costs.
Hence, gorilla tourism has become an
important source of income for local
people and gorillas are regarded as
an important resource.
                                                                                                           Year of the
                                                                                                           GORILLA
                                                                                                           Année du
                                                                                                           GORILLE

    © Aaron Nicholas WCS Takamanda-Mone Landscape Project, Cameroon
    The heart of the Cameroonian Cross River gorilla landscape. They have found refuge in this beautiful but challenging terrain.
Gorilla Conservation Vol 11 2009 - WAZA
WAZA magazine Vol 11/2009                                                                Protecting Africa’s Rarest Gorilla             3

  Andrew Dunn & Aaron Nicholas                                                                              WAZA Project 8010

  Protecting Africa’s Rarest Gorilla:                                                                                                   »
  Conservation of the Cross River Gorilla in Cameroon and Nigeria

  With fewer than 300 individuals           Little is known about just how many      The Cross River gorilla was first
  remaining the Cross River gorilla         Cross River gorillas may have once       named as a new species in 1904 but
  Gorilla gorilla diehli is recognized      roamed this area. However a recent       was largely neglected by the outside
  by IUCN as Critically Endangered          genetic study suggests that the Cross    world until the 1980s when the first
  and is the most threatened taxon of       River gorilla population has under‑      systematic surveys of this unique
  ape in Africa. Restricted to a small      gone a marked reduction in size with‑    ape began in Nigeria. The Wildlife
  mountainous area located at the           in the last 100–200 years, probably as   Conservation Society (WCS) has
  headwaters of the River Cross strad‑      a result of the introduction of modern   supported long‑term research on the
  dling the border between Cameroon         firearms. The population today is        Cross River gorilla since 1996. Initial
  and Nigeria, the Cross River gorilla is   at a perilously low level and gorillas   work focused on ecological studies
  the most western and northern type        survive only in the most rugged areas,   and surveys but has since expanded
  of gorilla. Spread across an area of      protected by their own adaptability      into a broad program of research and
  about 12,000 km2 Cross River gorillas     and by the relative inaccessibility of   conservation activities in both Nigeria
  are today found in roughly 11 discrete    the region and/or where local com‑       and Cameroon. This program now
  sites, most of which are separated        munities have strong local beliefs       involves government agencies, uni‑
  from each other by 10 km or more.         favouring their protection. Much         versities and NGOs (in particular, the
  This landscape ranges in altitude from    of the montane forest that once          Wildlife Conservation Society, the Ni‑
  200 m to more than 2,000 m with           harboured gorillas in the past has       gerian Conservation Foundation, the
  corresponding changes in vegetation       been lost, and further fragmentation     World Wide Fund for Nature, Fauna
  from lowland to montane forest.           of the remaining habitat threatens to    and Flora International, Pandrillus,
                                            isolate the gorillas in their mountain   San Diego Zoo, the North Carolina
                                            refuges. As the surrounding human        Zoo and Cameroon’s Environment
                                            population continues to grow, and        and Rural Development Foundation).
                                            as development has led to new road       With support from a variety of donors
                                            building and to an increased demand      significant progress has been made
                                            for farmland and forest produce          across the gorilla’s range in terms of
                                            (including bush meat) the gorillas’      protected area creation and manage‑
                                            status has become critical. Although     ment, capacity building, the develop‑
                                            cases of devastating diseases such as    ment of infrastructure, the provision
                                            Ebola and anthrax have not yet been      of essential biological information
                                            recorded Cross River gorillas often      and increased community involve‑
                                            live in close proximity to humans and    ment in conservation efforts. A series
                                            their livestock and so are at risk to    of international workshops have been
                                            a variety of pathogens and parasites,    organised by WCS to plan for more
                                            moreover the small sizes of the          effective conservation of the Cross
    The population                          remaining Cross River gorilla groups     River gorilla. As a result of these
                                            renders them extremely vulnerable        workshops (Calabar 2001, Limbe 2003
    today is at                             to the effects of introduced disease     and Calabar 2006) a Regional Action
                                            (Oates et al, 2007).                     Plan for the Conservation of the Cross
    a perilously                                                                     River gorilla1 for 2007–2011 was pro‑
                                                                                     duced. Although many of the activi‑
    low level and                                                                    ties specified in this plan have already
                                                                                     been completed much still remains to
    gorillas survive                                                                 be done.

    only in the most
    rugged areas…

                                                                                     1   Regional Action Plan for the Conservation
                                                                                         of the Cross River gorilla (Oates et.al., 2007).
Gorilla Conservation Vol 11 2009 - WAZA
4      Protecting Africa’s Rarest Gorilla                                                                              WAZA magazine Vol 11/2009

»

                                                                                                   © courtesy of Richard Bergl, North Carolina Zoo
                                Map of Cross River Gorilla distribution, evolving understanding of the Cross River gorillas range over the last 8 years.
                                                            Red areas indicate the estimated areas being used by different Cross River gorilla groups.

                                                  Support for protected area
                                                  creation and development

    Although the Cross River gorilla is           Survival prospects for the Cross River   Takamanda National Park was gazet‑
    distinguished from western gorillas           gorilla received a welcome boost         ted in November 2008 and conserva‑
    Gorilla gorilla gorilla only by careful       recently with the creation of two        tion activities including boundary
    measurements of their skeletons               new protected areas in Cameroon:         demarcation, conservation educa‑
    recent research indicates that there          Kagwene Gorilla Sanctuary and            tion, developing community access
    may be ecological differences as              Takamanda National Park. This is         and management strategies, park
    well. The area inhabited by the Cross         now a critical time for the Ministry     protection and the elaboration of
    River gorilla has a more markedly             of Forestry and Wildlife (MINFOF)        a management plan are all currently
    seasonal climate, with a longer and           who must work with WCS to develop        underway with co-financing from the
    more severe dry season and higher             detailed management and monitor‑         German Development Bank (KfW).
    levels of rainfall during the wet sea‑        ing strategies for these areas. Created Takamanda is an important refuge
    son, than the area occupied by other          in April, 2008 the Kagwene Gorilla       for 2–3 groups of Cross River gorillas –
    western gorillas. Under such climatic         Sanctuary is the first protected area    one of these groups being contiguous
    extremes there are frequent peri‑             established specifically for the con‑    with the Okwangwo Division of Cross
    ods of fruit scarcity and Cross River         servation of the Cross River gorilla.    River National Park in Nigeria. An‑
    gorillas need to supplement their diet        Although it covers an area less than     other protected area that is receiving
    with tree bark and lianas during such         20 km2 Kagwene is the only site where increasing attention is the Mone For‑
    times.                                        daily non‑invasive monitoring of Cross est Reserve, a site that was previously
                                                  River gorillas takes place (initiated in earmarked for upgrading because of
                                                  2003). Kagwene is also proving to be     its important botanical and wildlife
                                                  an ideal training site for building the  attributes, but is also being consid‑
                                                  capacity of conservation professionals, ered for carbon‑sequestration based
                                                  researchers, students and community funding with the support of the Unit‑
                                                  members thanks both to the well          ed Nations Development Programme
                                                  organised monitoring as well as the      and Great Ape Survival Partnership
                                                  presence of a well developed research (UNEP/GRASP).
                                                  camp staffed and managed by WCS.
Gorilla Conservation Vol 11 2009 - WAZA
WAZA magazine Vol 11/2009                                                                        Protecting Africa’s Rarest Gorilla   5

                                                                                                                                      »
                                                                                             Working with local
                                                                                             communities to protect
                                                                                             gorillas

                                                                                              A significant proportion of the Cross
                                                                                              River gorilla population occurs in
                                                                                              areas of unprotected forest, particu‑
                                                                                              larly in Cameroon. Many of these
                                                                                              outlying forest areas are threatened
  © Nicky Lankester                                                                           by a variety of human activities
  „Nyango“ – the only one in human care at Limbe Wildlife Centre.
                                                                                              including hunting and habitat loss
                                                                                              (through farming, burning and road
                                                                                              development). Since local communi‑
                                                                                              ties depend heavily on forest re‑
  In Nigeria, Cross River gorillas are             Cross River National Park is the           sources to supplement local incomes
  found in two well‑established pro‑               most important site for Cross River        we must strike a balance between
  tected areas: Afi Mountain Wildlife              gorillas in Nigeria and a focus of our     local human needs and conservation
  Sanctuary and the Okwangwo Divi‑                 current conservation efforts. Cross        if our efforts to protect the Cross
  sion of Cross River National Park. Afi           River National Park was created in         River gorilla are to succeed in the
  Mountain Wildlife Sanctuary (AMWS)               1991 from an amalgamation of four          long term. A network of community‑
  was created in 2000 and covers                   former forest reserves and consists of    ‑based‘ gorilla guardians’ has been
  an area of approximately 100 km2.                the Oban Division (about 3,000 km2)        established in Cameroon to improve
  AMWS is managed by the Cross River               south of the Cross River and the           the survival prospects for gorillas in
  State Forestry Commission in part‑               Okwangwo Division (640 km2) north          the most vulnerable forest sites that
  nership with a number of NGOs in‑                of the Cross River. Gorillas are only      currently lack either government or
  cluding Fauna and Flora International,           found in the northern Okwangwo Di‑         NGO support. The gorilla guardian
  Pandrillus, the Nigerian Conservation            vision: one group occupies the former      approach aims to promote the con‑
  Foundation and WCS. Although levels              Boshi Extension Forest Reserve and         servation of these Cross River gorillas
  of hunting have reduced somewhat                 the second occupies the Okwa Hills         in three important ways. Firstly, the
  since the creation of the sanctuary              and are known to range across the          appointed guardians act as a direct
  there are estimated to be no fewer               border into Takamanda National             link between conservation authori‑
  than 600 illegal farms inside the                Park. Despite the efforts of park          ties and these sites, reporting any
  sanctuary. Although the steep moun‑              authorities hunting is widespread          confirmed incidence of gorilla hunt‑
  tainous slopes of the sanctuary have             in Okwangwo – partly as a result of        ing to government officials and WCS
  largely protected it from logging Afi            three enclaved villages located within     quickly. This will help strengthen the
  is frequently damaged by dry‑season              the park boundaries. Enclaves were         application of wildlife laws. Secondly,
  fires that spread from surrounding               created to accommodate these vil‑          gorilla guardians are responsible for
  farms. Open areas created by fire                lages when the former forest reserve       the ongoing gathering of informa‑
  are soon colonised by herbs which                was established in 1930. Since then        tion concerning the location of gorilla
  form an important staple food for                the villages have increased markedly       nests from forest users within their
  gorillas at Afi. Of particular concern is        in size and their expanded farmlands       community (particularly from hunt‑
  the widespread logging and farming               now threaten to divide the park into       ers). This information will be recorded
  within the lowlands of the surround‑             two isolating the forests and gorillas     on a community‑produced forest
  ing Afi River Forest Reserve which               in the Okwa Hills from those in the        map. Research staff from WCS and
  threatens to sever the link that cur‑            Boshi Extension. WCS is currently          government then visit each village
  rently connects Afi Mountain Wildlife            working with the National Park Serv‑       2–3 times a year, to conduct surveys
  Sanctuary to the Mbe Mountains.                  ice to produce a management plan           of recorded nest sites in conjunction
                                                   for Cross River National Park that         with the gorilla guardians.
                                                   gives special emphasis to the conser‑
                                                   vation of the Cross River gorilla. We
                                                   also currently provide support for
                                                   ranger training, construction of new
                                                   ranger posts, joint gorilla surveys and
                                                   monitoring and the provision of es‑
                                                   sential field equipment.
Gorilla Conservation Vol 11 2009 - WAZA
6      Protecting Africa’s Rarest Gorilla                                                               WAZA magazine Vol 11/2009

»
                                                Preserving connectivity                     Raising awareness
                                                between Cross River                         through conservation
                                                gorilla sites                               education

                                                Our knowledge of the present dis‑            Given the fact that so many people
                                                tribution of the Cross River gorilla is      live in close proximity to the range
                                                expanding all the time, field teams          occupied by the Cross River gorilla
                                                having recently confirmed gorilla            raising awareness about the value of
                                                presence in a number of previously           conservation and the uniqueness of
                                                un‑surveyed forest areas, particularly       these gorillas in particular remains
                                                in Cameroon. Genetic studies across          a strong central component of our
    © WCS                                       all Cross River gorilla sites have also      long‑term conservation strategy. Ac‑
    Hunter with 2 red‑eared monkeys
                                                shed light on patterns of related‑           tive conservation education programs
    Cercopithecus erythrotis in Cross River
    National Park.                              ness and migration which in turn has         are now well established in many of
                                                helped us identify potential habitat         the villages and schools surround‑
                                                corridors based on spatial analysis          ing most though not all Cross River
    Given typical nest decay rates in           studies. In the last year, survey teams      gorilla sites. Our work focuses on the
    the area, it should be possible for         and researchers have been active             creation of and support for schools‑
    monitoring teams to visit most              in both countries ground‑truthing           ‑based conservation clubs and has
    recorded nest sites on these regular        potential corridor areas and we are          gradually expanded to include sup‑
    visits. Lastly, gorilla guardians play an   gradually improving our understand‑          port for the creation of local forest
    important role in building awareness        ing of the characteristics of habitat        management committees, radio out‑
    amongst their communities concern‑          corridors to ensure effective future         reach programs, posters and the use
    ing a range of topical conservation         management.                                  of ape films distributed by the Great
    issues as an extension of present                                                        Ape Film Initiative. Our conservation
    conservation education programmes           Today Cross River gorillas are concen‑       education outreach program now
    implemented by WCS across the               trated in the most rugged highland           covers more than 90 communities
    Cross River gorilla landscape.              areas where levels of disturbance            and more than 130,000 people in Ni‑
                                                from hunting and farming are re‑             geria and Cameroon. These efforts by
    In Nigeria, WCS is providing support        duced compared to the surrounding            WCS and others to improve levels of
    to help create a community‑owned            lowlands. Work in recent years has           environmental education and aware‑
    and managed wildlife sanctuary in           shown that the geographic isolation          ness since 2001 have contributed to
    the Mbe Mountains. Mbe is one of            of many sites has not yet resulted           a marked reduction in the level of
    only three Cross River gorilla sites in     in their genetic isolation and that          gorilla hunting. The presence of long‑
    Nigeria but lacks any formal protec‑        individual gorillas do occasionally         ‑term research projects at some of
    tion status. In 2005 the nine communi‑      move between sites in spite of the           the sites has also undoubtedly helped
    ties that surround the mountain and         high levels of human activity in the         to reduce hunting. But these efforts
    who claim traditional ownership rights      forests and their ongoing fragmenta‑         need to be continued and expanded,
    came together to form the Conserva‑         tion. Large tracts of lowland forest         especially to those unprotected sites
    tion Association of the Mbe Moun‑           survive to act as corridors linking sites    in Cameroon.
    tains (CAMM). Mbe covers an area of         as well as providing for the possibil‑
    around 100 km2 and is an important          ity of future population expansion if
    link in the landscape connecting Afi        key human pressures can be reduced.
    Mountain Wildlife Sanctuary to the          Further work is underway to help
    west with Cross River National Park         define what constitutes ideal habitat
    to the east. WCS currently provides         corridor areas and to what extent
    support to CAMM not only for gorilla        human and ecological factors need
    monitoring and protection but also          to be considered in defining likely
    for training, boundary demarcation,         corridors.
    the construction of ranger posts and
    socio-economic surveys. Nine eco‑
    guards patrol the mountain on a daily
    basis collecting information on gorillas
    and other wildlife – their presence also
    acts to deter poaching and to reinforce
    local rules and regulations.
Gorilla Conservation Vol 11 2009 - WAZA
WAZA magazine Vol 11/2009                                                                                 Protecting Africa’s Rarest Gorilla         7

                                                                                                                                                         »
  Improving our knowledge
  and understanding of the
  Cross River gorilla through
  research and monitoring

  WCS is proud of its reputation as
  a science‑based conservation or‑
  ganization and all of our important
  field based actions are grounded
  by baseline studies and ongoing
  monitoring. But Cross River goril‑
  las are difficult animals to study: as
  a result of past hunting pressure they
  are now rare and those that survive
  are understandably wary of humans.
  Data provided by daily monitoring of               © Allen Turner
                                                     Mbe ecoguards relaxing at the foot of the mountain with volunteer Naomi Cohen after a patrol.
  the gorillas in Kagwene has helped
  us establish an effective sanctuary
  boundary, and from a study of gorilla             Trans‑boundary large mammal sur‑                  da and Kagwene in Cameroon). Based
  feeding ecology we now understand                 veys and mapping of various conserva‑             on the Cybertracker software these
  the importance of the distribution                tion threats including illegal logging,           units allow the collection of standard‑
  of both dry and wet season favoured               river poisoning, bush‑burning etc in              ized, georeferenced data by monitor‑
  foods and the need to conserve                    areas such as Takamanda National                  ing teams in the field. The develop‑
  a range of habitat types if the go‑               Park and Cross River National Park, is            ment was made possible with support
  rilla’s dietary needs are to be met.              also providing information that will              from the Great Ape Conservation
                                                    help us devise more effective manage‑             Fund of the United States Fish and
  In Mone Forest Reserve, a recent                  ment strategies for protected areas.              Wildlife Service and training provided
  botanical reconnaissance in collabo‑                                                                by Dr. Richard Bergl of North Carolina
  ration with the Royal Kew Botanical                As part of our ongoing efforts to                Zoo. By using this technology we
  Gardens has confirmed the excep‑                   improve gorilla monitoring we                    hope to be able to improve the qual‑
  tional botanical richness of Mone,                 have recently introduced the use of              ity of the data that our ecoguards col‑
  while surveys of illegal logging in the            a hand‑held computer‑based data                  lect in the field, improve our database
  same area are providing insights into              capture system at four sites (Mbe and            management and the effectiveness of
  how the biodiversity of this area can              Okwangwo in Nigeria and Takaman‑                 our conservation efforts.
  be protected for future generations.
  Across the Okwangwo‑Takamanda‑
 ‑Mone landscape, extensive distri‑
  bution surveys have provided the
  clearest indication yet of where Cross
  River gorillas still occur.

  We recently helped (with support from the USFWS and Margot
  Marsh Biodiversity Foundation) local communities adjacent to the
  most vulnerable (unprotected) Cross River gorilla sites to estab‑
  lish a community based ‘Gorilla Guardian’ network. Here 2 of the
  present 6 Gorilla Guardians are shown – Peter Tipa and Moses Takia,
  together with a local hunter. They are measuring a Cross River Goril‑
  la nest – one of the functions that the guardian perform is the moni‑
  toring of local Cross River gorilla populations. Every 2–3 months,
  a combined WCS/Ministry of Forestry and Wildlife team visit each
  Gorilla Guardian village to learn more about the monitoring that has
  taken place and to talk to local hunters and the community. This is
  being evaluated as a community‑driven approach to conservation as
  an alternative to the traditional way of created protected areas.

             © WCS Takamanda‑Mone Landscape Project, Cameroon
Gorilla Conservation Vol 11 2009 - WAZA
8      Protecting Africa’s Rarest Gorilla                                                            WAZA magazine Vol 11/2009

»
    Conservation                              Abstract/Conclusion                        Protection du gorille
    without Boundaries                                                                   le plus rare de l’afrique:
                                              The Cross River gorilla faces an uncer‑    Conservation du gorille
    Given the distribution of the Cross       tain but far from bleak future. There      de cross river au Cameroun
    River gorilla, and the nature of the      have been some encouraging signs           et le Nigeria
    threats it faces a landscape level        recently: the creation of new protect‑
    approach for their conservation is es‑    ed areas, renewed commitment on            Andrew Dunn et Aaron Nicholas
    sential. WCS has been at the forefront    behalf of national governments and
    of recent efforts to improve levels       a number of newly discovered range         • Resumé/Conclusion
    of cooperation and understanding          extensions. Moreover corridors still ex‑    Le gorille de Cross River est
    between the contiguous Cross River        ist that connect many of the core sites     confronté à une incertitude, mais
    National Park in Nigeria and Taka‑        and migration does still occur despite      loin d’être un avenir sombre.
    manda National Park in Cameroon.          the tenuous nature of some of these         Il y a eu, récemment, quelques
    A number of shared activities have        corridors. With continued support and       signes encourageants: la création
    already been completed such as joint      a sustained effort there is real hope       de nouvelles aires protégées, un
    surveys of the international boundary,    that the long‑term conservation pros‑       engagement renouvelé au nom
    joint planning workshops and joint        pects for this critically endangered        des gouvernements nationaux et
    training opportunities. With support      species will gradually improve.             d’un certain nombre d’extensions
    from the Arcus Foundation we plan to                                                  de l’aire de répartition récem‑
    intensify our efforts to improve levels                                               ment découverts. De plus il existe
    of transboundary conservation in the      Acknowledgements                            encore des couloirs qui relient
    region during the coming year.                                                        beaucoup de ces sites centraux,
                                              We are grateful for the generous            et la migration se produit encore
                                              support of the United States Fish and       en dépit de la nature précaire de
                                              Wildlife Service, the Arcus Founda‑         certains de ces corridors. Avec un
                                              tion, WWF, KfW, Margot Marsh Bio‑           appui continu et un effort soutenu,
                                              diversity Foundation, Great Ape Trust       il existe un vrai espoir que les pers‑
                                              of Iowa, North Carolina Zoo, Colum‑         pectives de conservation à long
                                              bus Zoo Conservation Fund, Gorilla          terme pour cette espèce en danger
                                              Organization, Taronga Foundation,           critique d’extinction s’amélioreront
                                              Boise Zoo, Kolmarden Fundraising            progressivement.
                                              Foundation, IUCN, Berggorilla and
                                              Regenwald Direkthilfe, Donald Mano‑
                                              cherian, Quadra Foundation, Great
      There is real hope                      Ape Film Initiative (GAFI), John D.          Andrew Dunn
                                              and Catherine T. MacArthur Founda‑           Wildlife Conservation Society
      that the long‑term                      tion, U.S. Agency for International          adunn@wcs.org
                                              Development, Disney Foundation,              109 Marian Road
      conservation                            ProWildlife, WAZA and the National           GPO Box 796
                                              Geographic Conservation Trust.               Calabar
      prospects                                                                            Cross River State, Nigeria

      for this species                                                                     Aaron Nicholas
                                                                                           Wildlife Conservation Society
      will gradually                                                                       anicholas@wcs.org
                                                                                           Director, Takamanda‑Mone
      improve.                                                                             Landscape Project
                                                                                           P. O. Box 1308
                                                                                           c/o Limbe Botanical Gardens
                                                                                           Limbe, SW Province
                                                                                           Cameroon
WAZA magazine Vol 11/2009                                                       9

  © Gerald Dick, WAZA
  Mountain gorillas (Gorilla beringei) at Bwindi Impenetrable Forest, Uganda.

  © Gerald Dick, WAZA
  Mountain gorillas (Gorilla beringei) at Bwindi Impenetrable Forest, Uganda.
10   WAZA magazine Vol 11/2009

             © Florence Perroux
WAZA magazine Vol 11/2009                                                                    Addressing the trade in apes in Africa      11

  Neil Madisson                                                                                                     WAZA Project 9002

  Addressing the trade in apes in Africa »
  The illegal, commercial bushmeat
  trade is threatening many of the
  endangered species that live in the
  rainforests of west and central Africa.

  New roads, mainly cut through the
  forest for the timber and mining in‑
  dustries, enable hunters to penetrate
  into previously inaccessible areas.
  Many of these hunters are employed
  by ‘outsiders’ – urban‑dwellers with
  the means to pay for guns and car‑
  tridges – to poach the bigger animals
  for sale in the city markets. The trade
  is lucrative, illegal, and in danger of
  wiping out some of the most charis‑
  matic species in the world.

  A single gorilla carcass can fetch $60    © Bristol Zoo
                                            Rachel Hogan with the infant gorilla she raised. She has received the International Animal
  to the hunter. In a country where
                                            Welfare Award from IFAW, the Interational Fund for Animal Welfare, in October 2008.
  the average wage is less than $2 day,
  such a prize is highly valued.

  Young animals, too small for the          By providing a sanctuary                           By highlighting the threat
  bushmeat markets, are regarded            for confiscated primates                           to Cameroonian wildlife
  as a potential source of extra funds.
  Infant apes can be sold as pets to the    The number of raids by game guards                The ape orphans at the sanctuary live
  unwary traveller. But young gorillas      into areas known to house poach‑                  in large, natural enclosures, based
  aren’t easy to keep alive, and often      ers has steadily increased over the               at the Mefou National Park (MNP),
  starve before they are found and con‑     last few years, as international and              a secondary rainforest site. The
  fiscated by game guards. Chimpan‑         national pressure to address the                  groups of primates are looked after in
  zees are more robust and can often        trade in endangered species has                   conditions that are as close as possi‑
  cope with the traumatic conditions,       mounted. The EU‑funded ECOFAC                     ble to their free‑ranging forest home.
  but without experienced help they         programme (Ecosystèmes Forestiers                 MNP is located only an hour from
  too will die before too long.             d’Afrique Centrale/Forest Ecosystems              Yaoundé, Cameroon’s capital city,
                                            in Central Africa) is working with                which enables visitors to come to
  The work of Ape Action Africa (AAA)       the Ministry of Forests and Wildlife              see the animals and learn about the
  is to help in the fight against the il‑   (MINFOF) officers to prevent illegal              animals and the issues affecting them.
  legal bushmeat trade.                     bushmeat sellers and hunters. They
                                            are helped in their job by the role of            As well as their base in MNP, AAA
                                            the sanctuaries; AAA provide a place              have a presence at the Mvog Betsi
                                            where young primates, confiscated                 Zoo in the centre of Yaoundé. The
                                            by the guards in their anti‑bushmeat              Zoo is the centre for the conserva‑
                                            work, can be housed and raised.                   tion education team, who work with
                                                                                              schoolchildren, nature clubs and
                                            One of the major challenges of AAA                informal visitors to the Zoo, high‑
                                            is to keep the young animals in as fit            lighting the need to protect Cameroo‑
                                            a state as possible – a difficult skill           nian wildlife – before the forests are
                                            that the international zoo community              emptied.
                                            knows only too well. Staff at AAA
                                            work closely with the veterinary and
                                            animal husbandry professionals at
                                            Bristol Zoo, so that local expertise
                                            is developed and the animals can be
                                            looked after as best as possible.
12   Addressing the trade in apes in Africa                                                      WAZA magazine Vol 11/2009

»
 By planning for the future
 release of sanctuary‑held
 animals

  A long‑term objective of AAA is to
  return as many of the animals that
  arrive at the sanctuary back to the
  wild. Some species will be easier to
  reintroduce than others. Forest gue‑
  nons, mandrills and baboons are all
  potential for ‘quick’ release – if safe
  areas for reintroduction can be found.
  The apes will be more difficult to re-
 ‑establish in the wild. Work elsewhere
  in central Africa has demonstrated
  many of the problems that need to
  be overcome, such as the need to re‑
  lease animals into areas where there
  are no other existing wild populations,
  or the importance of releasing only                                                                           © Bristol Zoo
                                                                                     Nkan, Mvie, Nyum and Shai; one of the three
  one group into any territory (subse‑
                                                                                           gorilla groups at Mefou National Park.
  quent releases into the same area
  have a high chance of conflict and
  mortality).                                 Collaborations

  AAA are working with the two other       Bristol Conservation and Science         Supporting the Government of
  primate sanctuaries in Cameroon to       Foundation (BCSF), first working as      Cameroon with its efforts to address
  plan for reintroduction of sanctuary‑    Bristol Zoo, have been a key strategic   the illegal commercial bushmeat
 -held animals. In the first instance it   partner with AAA since 1998. Start‑      trade lies at the very heart of the
  is intended that a group of chimpan‑     ing out as the Cameroon Wildlife Aid     partners. The future is uncertain;
  zees will be released (and monitored),   Fund (CWAF), AAA first focussed on       can the sanctuary‑held primates be
  but in time it is hoped that even some   ameliorating the welfare conditions      re‑introduced successfully back into
  of the western lowland gorillas can be   of the animals held at Mvog‑Betsi        the wild? Will the law enforcement
  successfully returned to the wild.       Zoo. As the number of confiscated        efforts reduce the take in endangered
                                           primates increased, the demand for       species significantly? Can the zoo
                                           additional space became paramount.       play an increasingly important role in
 By providing study conditions MINFOF granted AAA the manage‑                       engaging visitors in the fight against
 to help African primates                  ment of the MNP in 2000, which           the illegal trade? All these ques‑
                                           then became the centre for housing       tions remain unanswered, and the
 The issues surrounding reintroduction, a larger number of animals. Mvog‑           future for Cameroon’s primates looks
 and optimising the welfare of the        ‑Betsi Zoo still retains a small number   uncertain. What we can say is that
 sanctuary‑held animals means that         of primates, as well as a few other      there is a strong, committed partner‑
 scientific study is of huge importance    species, and these form the basis for    ship working hard to save some of
 to AAA and BCSF. Several research         the conservation education activities.   the world’s amazing wildlife from
 projects with the various groups of       AAA education activities were given      extinction.
 primates has already taken place over a significant boost when Givskud Zoo
 the last few years. With the potential    committed significant resources, and
 collaboration of Yaoundé University,      their long‑standing support has been
 to help build local knowledge and ca‑     the main reason why the education
 pacity, the focus on scientific research programmes have been so successful.
 is set to increase in the forthcoming
 years. Studies such as individual and
 group behaviour, veterinary, nutrition
 and parasitology are all key to ensur‑
 ing optimum health, behaviour and
 the chances of establishing sustain‑
 able wild groups.
WAZA magazine Vol 11/2009                                                           Addressing the trade in apes in Africa   13

  Abstract/Conclusion                       Traiter le commerce des
                                            grands singes en Afrique
  Addressing
  the trade in apes in Africa.              Neil Madisson
  The illegal, commercial bushmeat
  trade is threatening many of the          • Resumé/Conclusion
  endangered species that live in the        Traiter le commerce                      La planification pour la future
  rainforests of west and central Africa.    des grands singes en Afrique             libération d’animaux tenus
  The work of Ape Action Africa (AAA)        Les échanges commerciaux illé‑           dans des sanctuaires
  is to help in the fight against the        gaux de viande de brousse est en         Un objectif à long terme de AAA
  illegal bushmeat trade. The work is        train de menacer un grand nombre         est de retourner à la nature le
  focussed on five main elements:            d’espèces en danger d’extinction         plus grand nombre d’animaux qui
                                             qui vivent dans les forêts tropica‑      arrivent au sanctuaire.
  By providing a sanctuary                   les humides de l’Afrique occiden‑
  for confiscated primates                   tale et centrale.                        La préparation
  One of the major challenges is to          Le travail de Ape Action Africa –        des conditions d’études
  keep the young animals in as fit           AAA (Action Grands Singes                pour aider les primates d’Afrique
  a state as possible – a difficult skill    d’Afrique) aide dans la lutte contre     Des études telles que le compor‑
  that the international zoo community       le commerce illégal de viande de         tement individuel et de groupe,
  knows only too well. Animals are kept      brousse. Le travail est centré en        la vétérinaire, la nutrition et la
  at two centres.                            cinq éléments principaux:                parasitologie sont tous essentiels
                                                                                      pour assurer une santé optimale,
  By highlighting the threat                L’ offre d’un sanctuaire                  le comportement et les chances
  to Cameroonian wildlife                   pour les primates confisqués              d’établir des groupes en liberté
  The largest Park is located only an       L’un des principaux défis est de          durables.
  hour from Yaoundé, Cameroon’s capi‑       garder les jeunes animaux dans
  tal city, which enables visitors to       le meilleur état possible – une           Collaborations
  come to see the animals and learn         compétence difficile que la com‑          L’avenir des primates du Came‑
  about the animals and the issues af‑      munauté internationale des zoos           roun semble incertain. Ce que nous
  fecting them                              ne connaît que trop bien. Les ani‑        pouvons dire c’est qu’il existe un
                                            maux sont gardés dans deux                partenariat fort, engagé, tra‑
  By planning for the future release        centres.                                  vaillant durement pour sauver une
  of sanctuary‑held animals                                                           partie de la faune étonnante du
  A long‑term objective of AAA is to        La mise en évidence                       monde de l’extinction.
  return as many of the animals that ar‑    de la menace qui pèse
  rive at the sanctuary back to the wild.   sur la faune du Cameroun
                                            Le plus grand parc est situé à
  By providing study conditions             seulement une heure de Yaoundé,
  to help African primates                  la capitale du Cameroun, qui
  Studies such as individual and group      permet aux visiteurs de venir voir          Neil Maddison MBA
  behaviour, veterinary, nutrition and      les animaux et d’apprendre sur les          Head of Conservation
  parasitology are all key to ensuring      animaux et les questions qui les            Programmes
  optimum health, behaviour and the         concernent.                                 Bristol Conservation
  chances of establishing sustainable                                                   and Science Foundation
  wild groups.                                                                          (An Operating Unit of the
                                                                                        Bristol, Clifton and West
  Collaborations                                                                        of England Zoological Society)
  The future for Cameroon’s primates                                                    Clifton
  looks uncertain. What we can say is                                                   Bristol BS8 3HA
  that there is a strong, committed                                                     UK
  partnership working hard to save
  some of the world’s amazing wildlife
  from extinction.
14   A gorilla researcher’s perspective on the Year of the Gorilla 2009                             WAZA magazine Vol 11/2009

 Thomas Breuer

 A gorilla researcher’s perspective…
  In 2009, the United National Envi‑
  ronmental Program (UNEP), Con‑
  vention on Migratory Species (CMS),
  UNEP/UNESCO Great Apes Survival
  Partnership (GRASP), and World
  Association of Zoos and Aquari‑
  ums (WAZA) have joined hands to
  declare 2009 the ‘Year of the Gorilla’.
  This campaign aims to support in‑
 ‑situ conservation efforts to ensure
  the long‑term survival of gorillas
  throughout their range.

 But why is such a campaign necessary?
 What do we know about the threats                                                                                 © Thomas Breuer
                                                                                                   Children in a local primary school
 gorillas are facing and how can we mit‑
                                                                                              around Nouabalé-Ndoki National Park
 igate them? What does the future hold                                                            holding self made sitatungas mask
 for western gorillas? What research                                                           after a Club Ebobo session, the Mbeli
 and conservation activities are done at     Taxonomy, status and threats                        Bai Study´s education components.
 Mbeli Bai, northern Congo?                  of western gorillas

  In this article, I hope to provide a go‑   Based on genetic analysis, scientists     In the early 1990s, conservationists
  rilla researcher’s perspective of how      have identified that gorillas consist     from the Wildlife Conservation Soci‑
  long‑term studies can help to ensure       of two species and four subspecies.       ety (WCS) and other organizations
  the survival of these critically endan‑    Eastern gorillas consist of two moun‑     discovered that the pristine forests
  gered apes. By outlining how different     tain gorilla populations in the Virunga   of Western Equatorial Africa were
  conservation approaches are beneficial Volcanoes region and in the Bwindi            under threat from increased logging
  to gorilla conservation, I will describe   Impenetrable National Park, Uganda,       activities. Logging practices in Central
  to our zoo partners how their long‑        and of several Eastern Lowland gorilla    Africa whether they are carried out as
 ‑term commitment to the Mbeli Bai           populations in the eastern Democratic     reduced impact logging (RIL) or not is
  Gorilla Study has helped, to not only      Republic of Congo. Western gorilla        often accompanied by illegal activities,
  provide new insights into the natural      species consist of a small, isolated      such as poaching of protected species,
  history of this elusive species, but also  population of Cross River gorillas in     even in concessions that hold a Forest
  how our partners’ contributions make       the Nigeria/Cameroon region and           Steward Council (FSC) certification. In
  a positive difference to the species’      the western lowland gorilla. Western      this case, gorillas are no exception—
  future. Additionally, these partnerships lowland gorillas make up the largest        despite the fact that gorillas are
  reinforce successful captive gorilla       numbers of gorillas, with approxi‑        protected by national laws through‑
  management and encourage other             mately 100,000–200,000 gorillas in        out their range, they are often the
  zoos to find in‑situ partner projects      the range states of Cameroon, Central     target of poachers. Increased logging
  they can support. Such support will        African Republic, Gabon, Republic of      activities have created a road network
  certainly stretch beyond this Year of      Congo, Equatorial Guinea and a small      throughout these remote forests and
  the Gorilla. Conservation challenges       population in the Kabinda region of       hence easy access for poachers. Fur‑
  protecting gorillas throughout their       Angola. Western gorillas are mega‑        thermore there has been an immense
  range will extend beyond 2009, and it     ‑charismatic mammals with an im‑           influx of people to the logging camps
  is therefore crucial that we establish     portant flagship role for conservation    and towns with an ever increasing de‑
  sustainable long‑term support.             projects throughout Central African       mand for bushmeat, including gorillas.
                                             forests.                                  The current financial crisis has led to
                                                                                       the suspension of many staff, however
                                                                                       their demand for bushmeat remains
                                                                                       and will further create pressure on the
                                                                                       wildlife. Furthermore the impact of
                                                                                       harvesting important gorilla fruit spe‑
                                                                                       cies, which has become more com‑
                                                                                       mon in areas where mahogany and
                                                                                       other valuable timber species have
                                                                                       become rare, is currently unknown.
WAZA magazine Vol 11/2009                                   A gorilla researcher’s perspective on the Year of the Gorilla 2009             15

…on the Year of the Gorilla 2009                                                                                                           »
  Law enforcement practices are
  notoriously insufficient to adequately
  protect wildlife in northern Congo.
  Even the protected areas that har‑
  bour the highest numbers of gorillas
  are substantially understaffed (cur‑
  rently 12 Ecoguards per 4,200 km2 in
  NNNP) and anti poaching patrols are
  insufficient to fully protect gorillas
  throughout the zone. In addition,
  another threat to the population has
  recently emerged: western gorilla
  populations in north‑eastern Gabon
  and western part of the Republic of
  Congo have experienced tremendous
  declines due to Ebola outbreaks.
                                                                                                                    © Thomas Breuer
                                                                                                 Blackback Scout looking at observers
  The combined effect of commercial
                                                                                                    during a feeding visit to Mbeli Bai.
  hunting for bushmeat, potential
  loss of habitat and the outbreak of        Why do western
  disease such as Ebola hemorrhagic          and mountain gorillas differ?
  fever have caused a sharp decline in
  several western gorilla populations,       Our current data on gorilla life histo‑     In‑situ study is imperative to gather
  leading to their reclassification by       ries is derived predominantly from          a more comprehensive knowledge
  the IUCN as Critically Endangered.         one high‑altitude mountain gorilla          base of western gorilla biology,
  This reclassification was based on         population and long‑term study site         particularly for scenarios of popula‑
  a projected population decline. The        (Karisoke Research Centre) located at       tion growth and life history patterns.
  discovery in 2008 of more than             the extreme range of gorilla distribu‑      In contrast with mountain gorillas,
  100,000 gorillas in northern Congo         tion in the Virunga Volcanoes – with        western gorillas, which account for
  does not, perhaps counter‑intuitively,     preliminary data available on Grau‑         over 90% of all gorillas in the wild and
  affect this assessment, but it does        er’s gorillas. However, western gorilla     nearly all captive populations, are
  provide both a greater opportunity         habitat differs from that of mountain       extremely difficult to study; dense
  for conservation and a challenge           gorillas. In lowland forests, terrestrial   forest vegetation comprises much
  for the prevention of Ebola spread,        herbaceous vegetation occurs at             of their habitat. Currently, only two
  which is assumed to happen pre‑            lower densities and is more patchily        western gorilla groups are fully habit‑
  dominantly through ape‑ape disease         distributed. Western gorillas are more      uated (i.e. meaning that they can be
  transmission in areas where gorillas       frugivorous than mountain gorillas.         followed by researchers every day).
  occur at high density. Furthermore,        Fruiting trees are more abundant, but       The demographic data from these
  these study shows that the majority        fruit availability varies largely each      two groups is insufficient for robust
  of gorillas occur outside protected        season. Given such vast ecological          modelling of the population dynam‑
  areas and therefore need to improve        differences in the habitats of western      ics of western gorillas in general.
  the law enforcement in the logging         and mountain gorillas, it is hazardous      Furthermore, the slow reproductive
  concessions.                               to extrapolate information from one         rate of gorillas makes the collection
                                             species to the other.                       of life‑history data a time‑consuming
  Nevertheless we urgently need                                                          process, demanding a long‑term
  critical life history data on this         Differences in resource availability        research investment. An evaluation
  largely unstudied great ape species.       combined with reduced folivory              of how recovery of declining popula‑
  Information gained from long‑term          could have direct effects on western        tions can be brought about is a clear
  studies on the population dynamics         gorilla development and mortality,          priority. Bais, such as Mbeli Bai,
  and demography of western gorillas         leading to slower life histories (and       provide unique opportunities for the
  is critical for assessing the vulner‑      in particular to a later weaning age)       study of wild gorillas due to their vis‑
  ability of their populations to specific   and probably higher infant mortal‑          ibility and the fact that many gorillas
  threats, such as logging and illegal       ity – important life history milestones     frequently visit them.
  hunting, and for predicting their abil‑    that can potentially affect a popula‑
  ity to recover from decline.               tion’s growth rate.
16   A gorilla researcher’s perspective on the Year of the Gorilla 2009                                   WAZA magazine Vol 11/2009

»
 Mbeli Bai – Nouabalé‑Ndoki
 National Park

  Luckily, due to increased conserva‑
  tion activities in Western Equatorial
  Africa, forest clearings – called “bais”
  in the local dialect – were discov‑
  ered. Bais are focal points in the rain
  forest that attract large numbers of
  many different mammals due to their
  mineral rich soil, plants, and clay that
  appear to be of particular nutritional
  importance to these species. Western
  gorillas make regular use of swampy
  clearings for food, thus providing
  a unique opportunity to observe
  and monitor the population status           © Thomas Breuer
                                              Silverback George and his harem leaving
  in this region. Mbeli Bai is a large
                                              the Mbeli Bai clearing – this group has been
  13 ha swampy forest clearing in the         monitored since 1995: in front is female
  south-west region of the Nouabalé-          Leah who has been the first wild gorilla
 -Ndoki National Park (NNNP), cover‑          observed using a tool.
  ing 4,200 km², Republic of Congo.
  The overall goal of the Mbeli Bai
  Study (MBS) is to ensure the long‑                                                         The daily life
 ‑term protection of gorillas and other                                                      of a researcher at Mbeli Bai
  forest mammals. We are combining
  applied research on intact gorilla         Since the 1990s, WCS has been                   Daily research at a forest clearing is
  population, poaching deterrence,           working in the north of the Republic            very different from following a habit‑
  capacity‑building and conservation         Congo, and in 1993, together with               uated gorilla group within the forest.
  education. The MBS is part of the          the Ministry of Forest Economy and              We do not aim to follow the groups
  Nouabalé-Ndoki Project, a collabo‑         Environment, was responsible for                into the forest, as we want to ensure
  ration between WCS‑Congo (www.             the creation of the NNNP. Together              that their lives remain entirely undis‑
  wcs‑congo.org) and the Government          with the neighbouring Dzanga-Ndoki              turbed. Usually, we simply wait for
  of Congo, which strives to protect         National Park in Central African Re‑            the animals to approach the clearing,
  and conserve the wildlife and habitats     public and the Lobéké National Park             at which time we observe them with
  within and around the NNNP through         in Cameroon. NNNP forms the core                the help of binoculars and telescopes.
  anti‑poaching, research, monitoring,       protected zone of the Sangha Trina‑             One might say that this is an easy job.
  education and ecotourism activities.       tional Landscape, which harbours one            However, our research demands infi‑
  It maintains strong links with the two     of the largest great ape population in          nite patience. It generally takes new
  local communities living around the        Africa. The NNNP, with its low levels           observers at least three months to
  NNNP through a participatory ap‑           of disturbance, represents one of               learn each gorilla’s identity. Currently,
  proach to conservation.                    the last remaining intact forest (with          we have around 130 different gorillas
                                             no history of logging) in the Congo             in the visiting population residing in
                                             Basin. The NNNP is also an important            14 social groups and 10 solitary males.
                                             stronghold for other endangered                 It often takes many hours and, oc‑
                                             forest mammals, such as forest                  casionally, even days, before gorillas
                                             elephants, central chimpanzees and              visit the clearing, but we must remain
                                             bongos to name a few. Saving this               continuously alert and vigilant.
                                             landscape to ensure the survival of
                                             the great apes – our closest cousins –
                                             is an urgent global conservation
                                             priority.
WAZA magazine Vol 11/2009                                  A gorilla researcher’s perspective on the Year of the Gorilla 2009            17

                                                                                                                                          »
  Sometimes several different groups
  enter the bai simultaneously, along
  with all the other mammals who
  might happen to be visiting the clear‑
  ing (e.g. forest elephants, sitatun‑
  gas, buffaloes, Congo clawless otter,
  spotted‑necked otters and black‑and‑
 ‑white colobus monkeys), demanding
  our full attention for data collection.
  Generally, at least two observers
  sit on the 9m‑high platform (called
  a mirador) at the edge of the forest
  clearing during daylight hours. We are
  present at the bai for approximately
  10 hours every day, which provides
  us with detailed data to further our
  understanding of the ecological and
  social factors that determine gorilla
                                                                                           Silverbacks of Mbeli Bai – each gorilla has
  bai visiting patterns. This research is
  complemented by monthly monitor‑          Research benefits                             © Thomas Breuer his own face and story.
  ing of more than 480 fruiting trees in    and media attention
  the study site. Analyses of bai visita‑
  tion and grouping patterns of other        Forest clearings provide unique          While data from these habituated
  large mammals, such as elephants,          opportunities to accumulate              groups can provide us detailed infor‑
  provide important information on the       conservation‑relevant demographic        mation on the daily activities, ranging
  role of bais in determining large‑scale    data of mammals with slow life histo‑ patterns, and social behaviours of
  associations and population structure      ries, and allow for the documentation western gorillas, there is still a lack
  of these species. Only rarely do we        of the behaviour of charismatic goril‑   of knowledge on species/population‑
  enter into the swampy clearing to get      las, raising media attention and public -specific group dynamics, life-history
  gorilla dung samples. These samples        support for conservation.                patterns (e.g. mortality) and other
  are analyzed for parasite load by the                                               important demographic parameters.
  WCS Global Health Program. Ad‑             Over the past few years, our theories    Through monitoring individually
  ditionally the MBS is contributing         on western gorilla social structure      identifiable animals, Mbeli Bai has
  towards a great ape monitoring and         and socio‑ecology have been greatly      provided major and rare insights into
  surveillance program in the NNNP           altered due to data collected from       the social organization and behavior
  through visual health observations.        forest clearing observation, and         of this elusive species. In total we
                                             results from the MBS has played          have monitored more than 350 go‑
                                             a large role in our collective knowl‑    rillas since our monitoring efforts
                                             edge of the species. We now have         started in February 1995. We have
                                             a greater understanding of the           been able to determine that, in
                                             western gorilla, and can compare         contrast to up to 50% of mountain
    “We have                                 our knowledge with long‑term data        gorilla groups being multi‑male,
                                             collection on mountain gorillas from     western gorillas almost exclusively
     monitored more                          the Karisoke research centre in the      contain only one fully adult silver‑
                                             Virunga Volcanoes. Many astounding       back. In contrary to adult males, adult
     than 350 gorillas                       behavioural observations have been       females do not range on their own.
                                             reported, including twin births, silver‑ Similar to mountain gorillas, female
     since February                          back splash displays, the first photo‑   western gorillas show both natal and
                                             graphed ventro‑ventral copulation        secondary transfer and also involun‑
     1995…”                                  in free-ranging gorillas and the first   tary transfer (changes between social
                                             ever observation of tool use in free‑    groups). Involuntary transfer happens
                                            -ranging gorillas. These findings have    when a group disintegrates after the
                                             attracted significant international      presumed death of the harem holder.
                                             media attention.                         Due to the absence of multi‑male
                                                                                      groups, it is not surprising to find
                                                                                      higher rates of group disintegrations
                                                                                      in western gorillas.
18     A gorilla researcher’s perspective on the Year of the Gorilla 2009                             WAZA magazine Vol 11/2009

»
 Further, our monitoring provides
 baseline life history data (birth rates,
 mortality rates, inter‑birth intervals,
 age at first parturition) of an intact
 gorilla population that can be used
 to model its population dynamics.
 Together with higher maternal invest‑
 ment due to increased unstable food
 availability, higher predation risk by
 leopards, and more arboreality, this
 will likely lead to higher infant mortal‑
 ity and slower physical maturation.
 Preliminary data from Mbeli Bai
 demonstrate that in this western go‑
 rilla population, infants are weaned
 at a later age (four years, compared
 to three years in mountain gorillas),
 have higher infant mortality (43%
 to age three compared to mountain
 gorillas (27.1%); and may have longer
 inter‑birth intervals. The slower physi‑
 cal maturation of western gorillas
 could have serious consequences for
 social structure, mortality patterns
 and, particularly, for population
 growth rates that will affect recovery         Capacity building                        Conservation education
 from population crashes and pros‑                                                       and Club Ebobo
 pects of survival for this critically         The MBS strives toward securing the
 endangered great ape species.                 current and future wildlife popula‑        The project also trains educators to
                                               tions by building capacity in the          promote wildlife conservation and
                                               country, and instilling in the Congo‑      the role of the NNNP, in particular
     Other research benefits                   lese people a reverence for and ap‑        through the conservation education
                                               preciation of their invaluable wildlife    program “Club Ebobo” (Ebobo is the
     In addition to baseline population        heritage. We employ Congolese              name for gorilla in the local language).
     data, the Mbeli Bai Study has been        nationals as research assistants with      Conservation education can play
     expanding its research into the sur‑      the aim to increase their capacity in      a vital role in changing local attitudes
     rounding forest and has conducted         all areas of research methodology          toward the value of wildlife, and is
     a study to determine the ecological       and natural resource monitoring.           an important long‑term strategy to
     factors that potentially affect western   We train Congolese research assist‑        mitigate the threats that wildlife and
     gorilla distribution and density. Ob‑     ants in data collection, analysis, and     rainforests are facing in northern Con‑
     servations from Mbeli Bai have also       presentation of results. We support        go. The MBS, as part of the Nouabalé-
     contributed to our understanding of       the participation of our researchers at   -Ndoki Project, currently runs a Club
     Ebola transmission between social         training workshops, and work closely       Ebobo in local schools around the
     groups. Observations of simultane‑        with them to improve their academic        NNNP with the aim to increase
     ous use of fruiting trees by various      and language skills so that they can       knowledge of wildlife and forests, and
     social groups, as well as observations    obtain a higher degree at a European       change children’s attitudes to reflect
     from remote video camera (e.g. feed‑      or American university.                    a respect for nature and their wildlife
     ing on fruit remains), suggest that                                                  heritage. Club Ebobo activities are
     ape‑to‑ape transmission can act as an                                                designed to encourage creativity
     amplifier of Ebola outbreaks.                                                        among students, rather then using
                                                                                          the learning‑by‑rote system that is
                                                                                          popular in Congo schools. Specifically,
                                                                                          Club Ebobo teaches students about
                                                                                          the fascinating fauna and flora of the
                                                                                          region’s ecosystem, instilling in them
                                                                                          an appreciation and pride in the biodi‑
                                                                                          versity that exists in their region.
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